$ git clone -n https://src.fedoraproject.org/rpms/perl-NetPacket.git /var/lib/mock/f45-build-25482-611/root/chroot_tmpdir/scmroot/perl-NetPacket
Cloning into '/var/lib/mock/f45-build-25482-611/root/chroot_tmpdir/scmroot/perl-NetPacket'...
$ git fetch origin 8c086164a9d5febb624ff151b867c0135544cd76:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-NetPacket
 * [new ref]         8c086164a9d5febb624ff151b867c0135544cd76 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c08616 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild